2012-2014年龙岩市城区饮用水水质监测结果分析

Analysis on water quality monitoring results of Longyan city in 2012-2014

目的了解龙岩市城区近3年各类生活饮用水卫生状况及变化趋势,保障居民饮水卫生安全。方法依据GB 5749-2006《生活饮用水卫生标准》对2012-2014年龙岩市城区各类生活饮用水监测结果进行分析。采集了3年的出厂水72份。结果 2012-2014年龙岩市城区饮用水的合格率为81.94%,2012-2014年出厂水合格率分别为82.61%、85.19%、86.36%,不合格指标有浑浊度、消毒剂、菌落总数、总大肠菌群、耐热大肠菌群;2012-2014年末梢水合格率为93.94%,92.04%和79.55%,主要不合格指标为色度、浑浊度、p H、铁、消毒剂、菌落总数、总大肠菌群、耐热大肠菌群;2012-2014年二次供水合格率分别为66.67%,62.5%和62.0%,主要不合格指标为色度、浑浊度、p H、铁、消毒剂、菌落总数、总大肠菌群、耐热大肠菌群,以消毒剂的不合格率较高,其次是细菌总数。结论龙岩市生活饮用水尚存在微生物污染的安全隐患,今后要加强卫生督导,确保饮用水的卫生安全。

Objective To understand all kinds of domestic and drinking water hygiene status and trends for nearly three years,to ensure the safety of residents drinking water health in Longyan city. Methods According to GB 5749- 2006＂standard of drinking water health＂,all kinds of domestic and drinking water monitoring results of 2012 to 2014 in Longyan city were analyzed. 72 factory water,308 peripheral water,135 secondary water supply in these three years were collected. Results The percent of pass was 81. 94% water in Longyan city in 2012- 2014,the qualified rate of factory water were 82. 61%,85. 19% and 86. 36% from 2012- 2014 respectively. The unqualified index were turbidity,disinfectants,the total number of colonies,total coliforms,heat- resistant coliform bacteria; The percent of pass for peripheral water in2012- 2014 were 93. 94%,92. 04% and 79. 55%,the main unqualified indexs for chromaticity and turbidity,p H,iron,disinfectant,the total number of colonies,total coliforms,heat- resistant coliform bacteria; The percent of pass for secondary water supply in 2012- 2014 were respectively 66. 67%,62. 5% and 62. 0%,the main unqualified indexs were chromaticity and turbidity,PH,iron,disinfectants,colony total coliform bacteria,total coliforms,heat- resisting,the qualified rate of disinfectant was higher,followed by the total number of bacteria. Conclusion The results show that microbial contamination of drinking water in Longyan city exist safe hidden trouble,strengthen health supervision to ensure the health and safety of drinking water should be taken in the future.